like saying, "geez" or something
A very flexible interjection used in many situations, but especially when either:
1. Another person explodes of anger, right in your face.
2. When you're really, really bored of something, or just bored in general.
A variation of sheesh is geez
1. Sheesh, stop yelling in my face. Just calm down.
2. Sheesh, this is so boring.